EP3864297A1 - Module de soufflante a pales a calage variable - Google Patents
Module de soufflante a pales a calage variableInfo
- Publication number
- EP3864297A1 EP3864297A1 EP19813617.8A EP19813617A EP3864297A1 EP 3864297 A1 EP3864297 A1 EP 3864297A1 EP 19813617 A EP19813617 A EP 19813617A EP 3864297 A1 EP3864297 A1 EP 3864297A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- blower
- shaft
- blades
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/322—Blade mountings
- F04D29/323—Blade mountings adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
- B64C11/38—Blade pitch-changing mechanisms fluid, e.g. hydraulic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D7/00—Rotors with blades adjustable in operation; Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/36—Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
- F02K3/06—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with front fan
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/028—Units comprising pumps and their driving means the driving means being a planetary gear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
- F04D29/054—Arrangements for joining or assembling shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/40—Transmission of power
- F05D2260/403—Transmission of power through the shape of the drive components
- F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
- F05D2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclical, planetary or differential type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/60—Control system actuates means
- F05D2270/64—Hydraulic actuators
Definitions
- the present invention relates to the field of turbomachinery. It relates in particular to a fan module with variable pitch blades.
- a blower fitted with variable pitch or pitch blades allows to adjust the pitch or the orientation of the blades, and more precisely the blade wedge angle depending on the flight parameters so as to optimize the operation of the blower.
- this configuration makes it possible to optimize the blower module in which such a blower is integrated.
- the pitch angle of a blade corresponds to the angle, in a longitudinal plane perpendicular to the axis of rotation of the blade, between the chord of the blade and the plane of rotation of the fan.
- variable pitch blades can occupy a so-called reverse thrust position (known by the English term "reverse") in which these make it possible to generate a counter-thrust so as to participate in the slowing down of the aircraft and a position of feathering in which, in the event of failure or breakdown, these limit their resistance.
- blowers whose nominal compression ratio is increasingly low, and consequently with an increasingly large external diameter.
- Such choices generate an increase in the operability constraints of the fan blades between the operating conditions on the ground and in flight.
- An effective way to meet these constraints has been to consider fan blades with variable timing.
- the drive of this large diameter blower module with a low pressure ratio (generally less than 1.3) is in particular permitted by virtue of a speed reducer which allows a power shaft of the turbomachine to drive the shaft blower and which reduces the speed of rotation of the blower shaft relative to the power shaft.
- At least two bearings are mounted in an annular lubrication space, upstream of the speed reducer in order, on the one hand, to support the diameter of the blower and the speed reducer, and on the other hand to allow the integration of a system of pitch change or stalling of the fan blades.
- the annular lubrication enclosure which extends below the blower rotor also makes it possible to lubricate the speed reducer and at least partially envelop the pitch change system as well as the bearings.
- this arrangement remains bulky and has a negative influence on the mass of the fan module as well as on the performance of the turbomachine.
- the pitch change system, the speed reducer and the bearings, all arranged in the annular enclosure generate an axial bulk and a radial bulk under the pivot axis of the blades.
- Such an increase in mass influences the frequency position of the flexural deformation mode of the fan relative to the maximum speed of rotation of the fan depending on the operation of the turbomachine.
- the frequency of this flexural deformation mode tends to move towards low frequencies and approach the maximum operating speed, which leads to an increase in dynamic play loads and consumption in the presence of an imbalance at the level blower.
- misalignments occur between the power and fan shafts which are reflected in the organs of the speed reducer.
- a planetary gear reducer which includes an inner planetary (or solar), satellites, a planet carrier and a crown (or outer planetary)
- the misalignments, in particular dynamic occur at the input shaft (which is connected to the power shaft of the turbomachine), the planet carrier and the crown which must be managed by modifying these organs or adding parts to modify their behavior.
- the present invention aims in particular to provide a blower module making it possible to improve, in a simple and effective manner, the radial and axial dimensions so as to improve the mass of the module and its dynamic situation while avoiding significant structural modifications.
- blower module with variable pitch blades said blower module comprising:
- connection mechanism connected to the blades of the fan and a control means acting on the connection mechanism
- the first bearing being disposed upstream of the speed reducer and the second bearing being disposed downstream of the speed reducer
- the blower rotor being connected to the blower shaft by an annular journal extending at least on an upstream part of the lubrication enclosure, and the control means being located axially upstream of the journal.
- the configuration of the journal relative to the blower rotor supporting the blades and of the lubrication chamber upstream of the blower shaft, and of the bearings relative to the speed reducer makes it possible to reduce on the one hand, the axial dimensions and on the other hand, the radial dimensions in the fan rotor.
- the fan rotor and the blade setting axis can be placed as close as possible to the fan bearings, which also improves the dynamic behavior of the fan module (reduction of the weight in overhang on these bearings).
- the bearings upstream and downstream of the speed reducer facilitate the integration of the pitch change system and in particular of the control means which has more space axially.
- the blower module also includes one or more of the following features, taken alone or in combination:
- the annular journal extends below the feet of the blades along a radial axis
- the annular journal comprises an upstream end situated axially at the level of the pitch setting axis and extends downstream of the pitch setting axis,
- the fan rotor includes a support ring comprising radial cylindrical housings distributed regularly around the longitudinal axis and each intended to receive a blade root, the journal being fixed downstream of the support ring,
- the control means is arranged upstream of a radial plane in which the setting axes of the blades are defined
- control means is integral in rotation with the fan shaft, the control means comprises a fixed body and a body movable in translation along the longitudinal axis X relative to said fixed body, the movable body being connected to the connection mechanism ,
- control means comprises a fixed body and a movable body which is arranged around the fixed body and which is coaxial with the longitudinal axis
- speed reducer comprises a sun gear coupled to the power shaft, satellites and a carrier satellites which carries the satellites and which is coupled to the blower shaft
- the fan shaft and the planet carrier are monobloc
- the blower module comprises means for supplying the control means connected to a power source, the supply means comprising pipes which pass through the speed reducer and extend at least partially inside the the fan shaft, the speed reducer comprises through openings which are formed in the planet carrier so as to allow the passage of the pipes, each through opening being arranged between two adjacent satellites,
- the supply means are coupled to an oil transfer bearing arranged downstream of the speed reducer, the first bearing comprises two ball bearings or a roller bearing and a ball bearing,
- the first bearing is a ball bearing
- the second bearing is a roller bearing
- the reducer comprises a number n of satellites, n being equal to or greater than three,
- the speed reducer is housed in the lubrication enclosure
- connection means comprise connecting rods each with a first articulated end with a yoke of a ring secured to the movable body of the control means and a second articulated end with a crankpin of the blade root,
- the blower module comprises an upstream blower and a downstream blower
- the upstream blower is mounted so as to rotate about the longitudinal axis and the downstream blower is mounted fixed relative to the upstream blower,
- At least one fan is faired
- the oil transfer bearing is in fluid communication with the supply means pipes
- the first and second guide bearings are supported by the fan shaft upstream and downstream of the speed reducer
- the first bearing comprises an internal ring linked to the fan shaft and an external ring linked to an upstream bearing support, and rolling elements between the internal and external ring,
- the second bearing comprises an internal ring linked to a cover and an external ring linked to a downstream bearing support, and rolling elements between the internal ring and the external ring,
- the pitch axis of the blades is perpendicular to the longitudinal axis.
- the invention also relates to a turbomachine comprising at least one blower module having any of the above characteristics.
- Figure 1 shows an axial section of a turbomachine to which the invention applies
- FIG. 2 schematically represents in an axial section a detailed view of a fan module of a turbomachine according to the invention
- FIG. 3 illustrates another embodiment of a fan module of a turbomachine according to the invention
- Figure 4 is an axial sectional view of another embodiment of a turbomachine comprising a blower module according to the invention.
- Figure 5 is a perspective view from an upstream side of an example of a speed reducer mounted in a turbomachine with a blower module according to the invention
- Figure 6 is a perspective view from a downstream side of the speed reducer illustrated in Figure 5;
- Fig. 7 shows in perspective an example of a planet carrier for the speed reducer illustrated in FIGS. 5 and 6.
- turbomachine 1 intended to be mounted on an aircraft.
- This turbomachine 1 is here a double flow turbomachine which extends along a longitudinal axis X.
- the invention can be applied to other types of turbomachine comprising at least one fan as we will see in the rest of the description.
- blower is used to designate either a blower or a propeller, the blades of the blower or of the propeller being able to be faired (for example for turbojets) or not faired (for example for turboprop engines).
- the turbomachine 1 comprises a gas generator 2 upstream of which is mounted a fan module 3 with at least one fan 4.
- upstream and downstream are defined with respect to the circulation of gases in the turbomachine which is substantially parallel to the longitudinal axis X.
- the terms “internal”, “external”, “above”, “below”, “radial” and “radially” are defined with respect to a radial axis Z perpendicular to the longitudinal axis X and with regard to the distance from the longitudinal axis X.
- the terms “axial” and “axially” are defined with respect to the longitudinal axis.
- the turbomachine 1 double flow comprises an external nacelle 5 enveloping the gas generator 2.
- the gas generator 2 comprises for example, from upstream to downstream, a low pressure compressor 6, a high pressure compressor 7, a combustion chamber 8, a high pressure turbine 9 and a low pressure turbine 10.
- the low pressure compressor 6 and the low pressure turbine 10 each comprise a rotor, a low pressure shaft 11 connecting the rotors to form a low pressure body.
- the high pressure compressor 7 and the high pressure turbine 9 each comprise a rotor, a high pressure shaft 12 connecting the rotors to form a high pressure body.
- the fan 4 is here faired by a fan casing 13 secured to the nacelle 5.
- the fan 4 compresses an air flow entering the turbomachine which is divided into a primary air flow circulating in an annular primary stream 14 which passes through the gas generator and a secondary air flow circulating in an annular secondary stream 15 around the gas generator.
- the primary vein 14 and the secondary vein 15 are separated by an annular inter-vein casing 16 surrounding the gas generator.
- the inter-vein casing 16 comprises, upstream thereof, a separation nozzle 17 which divides the incoming air flow into primary air flow and into secondary air flow.
- the primary vein 14 is delimited radially by an internal annular casing 18 and the inter-vein casing 17 annular.
- the secondary vein 15 this is delimited radially by the inter vein casing 16 and the nacelle 5.
- the turbomachine 1 further comprises an ejection nozzle 19 located downstream of the gas generator 2 through which the primary air flow and the secondary air flow are ejected outside the turbomachine, and in particular in the 'atmosphere.
- the fan module 3 comprises a fan rotor 20 which is crossed by an annular fan shaft 21, centered on the longitudinal axis X.
- the fan shaft 21 rotates the fan rotor 20 about the axis longitudinal.
- the fan shaft 21 is itself rotated by a power transmission shaft of longitudinal axis X via a power transmission mechanism 22.
- the power transmission shaft is the shaft low pressure 1 1.
- the power shaft is a power turbine shaft supplied with gas by the generator gas.
- the power transmission mechanism 22 makes it possible to reduce the speed of rotation of the fan shaft relative to the speed of the low pressure shaft.
- the power transmission mechanism 22 allows the arrangement of a blower with a large diameter so as to increase the dilution rate.
- the dilution rate of the blower is greater than 10.
- the dilution ratio is between 15 and 20.
- the diameter of the blower is greater than 250 cm.
- the fan rotor 20 carries a series of blades 23 which are pitched or variable pitch.
- the blades 23 each include a foot 24 and the blades 23 extend radially outward from their feet 24.
- the free end of the blades is delimited radially by the fan casing 13.
- the fan rotor 20 comprises more precisely a support ring 25 centered on the longitudinal axis X.
- the support ring 25 comprises a plurality of radial cylindrical housings 26 which are regularly distributed around its periphery.
- the housings 26 each receive, pivotally along a setting axis A, a foot 24 of the blade.
- the setting axis A is parallel to the radial axis.
- each blade foot 24 is in the form of a bulbous attachment which is integral with a pivot 27 which is mounted in a housing 26.
- Each foot 24 pivots in a cylindrical housing 26 by means of a guide bearing 28.
- a guide bearing 28 there are two guide bearings in each housing 26. These bearings each include bearings and are mounted one above the other along the radial axis Z.
- each bearing 28 comprises an inner ring and an outer ring between which are arranged rolling elements.
- Each internal ring is linked to the foot 24 and each external ring is linked is linked to the wall of the cylindrical housing 26.
- the rolling elements of these two bearings 28 here comprise balls 29 respectively.
- the feet 24 of the blades are covered by an external annular casing 30 which is centered on the longitudinal axis X and which extends downstream an inlet cone 31 of the fan so to ensure aerodynamic continuity with the cone 31. The latter guides the incoming air flow towards the blades 23 of the fan.
- the blower module 3 further comprises a timing change system 32 or pitch of the blades of the blower 4 making it possible to vary the timing or pitch of the blades around their radial timing axes A so that they can have different angular positions according to the conditions of operation of the turbomachine and the flight phases concerned.
- the pitch change system 32 comprises connection means 33 connected to the blades 23 of the fan and a control means 34 acting on the connection means 33.
- control means 34 is integral in rotation with the blower shaft 21.
- control means 34 is arranged upstream of the blower shaft 21
- control means 34 is arranged upstream of a radial plane in which the setting axes of the blades of the fan are defined.
- control means 34 comprises a linear annular actuator of axis coaxial with the longitudinal axis X.
- the linear actuator comprises a fixed body 35 integral in rotation with the fan shaft and a movable body 36 in translation relative to the fixed body 35 along the longitudinal axis X.
- the mass of the pitch change system is thus better distributed (because having a reduced overhang with respect to the bearings 69a, 69b of the fan rotor described later in the description), which improves the dynamic behavior of the fan rotor.
- the movement of the movable body 36 along the longitudinal axis causes the movement of the connecting means 33, described later in the description, in such a way that the latter causes the blades 23 of the fan to pivot around the setting axis. A and thus the setting of the blades 23.
- the fixed body 35 is cylindrical, of longitudinal axis X, of circular section.
- the fixed body 35 comprises an annular wall 37 with a first end 38 and a second end 39 which are opposite along the longitudinal axis.
- the wall 37 is fixed to an upstream end 40 of the fan shaft.
- the wall 37 comprises a first annular flange 41 extending radially from the second end 39.
- the first annular flange 41 extends inside the fixed body 35.
- This first annular flange is fixed on a second annular flange 42 of the fan shaft 21 to allow the fixing of the fixed body on the fan shaft.
- the fixed body 35 also comprises a radial wall 43 here delimiting two chambers 44a, 44b with variable volume in the movable body 36 and which are axially opposite.
- the wall 43 extends from a radially external face of the wall 37, towards the outside.
- the movable body 36 is arranged around the fixed body 35 and is coaxial with the longitudinal axis. This moves axially under the action of a control of the control means 34.
- the pitch change system comprises fluid supply means 45 ensuring the control thereof.
- the chambers 44a, 44b are intended to receive a fluid, for example hydraulic under pressure, from a fluid supply source 83 so that the movable body 36 occupies at least two positions. These positions correspond respectively to the thrust reversal position known in English as the "reverse" and to the feathering position of the fan blades.
- the thrust reversal position the fan blades participate in the braking of the aircraft, in the manner of the usual thrust reversers.
- the blades 23 are then erased as best as possible relative to the direction of advance of the aircraft, for example in the event of failure of the turbomachine, which makes it possible to limit the halftone.
- the pitch angle of the blades is positive, and is generally of the order of 90 °.
- the pitch change system 32 further comprises a synchronization ring 46 which is driven in translation, axially, by the control means.
- the synchronization ring 46 is integral on the one hand, with the movable body 36 and on the other hand, with the connecting means 33.
- the synchronization ring 46 allows the displacement of the movable body to cause all the blades to pivot.
- This comprises a first annular radial flange 86 which is fixed to a second annular radial flange 87 carried by the movable body 36.
- the second annular radial flange 87 is located more precisely at an upstream end of the movable body 36.
- the ring of synchronization 46 includes several yokes 58 distributed regularly and circumferentially around the longitudinal axis. Each yoke 58 cooperates with a link 47 of the connecting means 33.
- the connecting means 33 in this example comprise several rods 47.
- the rods 47 are arranged around the actuator.
- Each link 47 comprises a first end 88 and a second end 89 opposite in the direction of elongation of the link 47.
- the direction of elongation is here substantially parallel to the longitudinal axis (in installation situation).
- the first end 88 is articulated in a yoke 58 of the synchronization ring 46 while the second end 89 is connected to a fork 90 which is carried by a crank pin 48 with a blade root.
- Each crank pin 48 is located at a radially inner end of the blade root 23. The crank pin 48 makes it possible to increase the force necessary to adjust the setting of the corresponding blade. In this way, the translational movement of the movable body 36 is transmitted to each blade.
- the actuator is an annular hydraulic cylinder.
- the cylinder consists of its fixed rod secured to the fan shaft and a cylinder movable relative to the rod.
- the rod is formed by the fixed body 35 while the cylinder is formed by the movable body 36.
- the power transmission mechanism 22 comprises a speed reducer 50.
- the speed reducer is of planetary gear train.
- the latter is housed in a lubrication enclosure 60 (shown diagrammatically in dotted lines in FIG. 2) in which the latter is lubricated.
- the speed reducer 50 comprises an inner sun gear (or solar) 51, satellites 52, a planet carrier 53 and an outer ring 54 (outer sun gear).
- the planetary gear 51 is centered on the longitudinal axis X and is coupled in rotation with the power shaft (here the low pressure shaft 11) along the longitudinal axis X via a planetary shaft 55.
- the satellites 52 are carried by the planet carrier 53 and each rotate around an axis substantially parallel to the longitudinal axis X. Each of the satellites 52 meshes with the sun gear 51 and the outer ring 54. The satellites 52 are arranged radially between the sun wheel and the ring. In the present example, three satellites 52 are provided.
- the speed reducer 50 can comprise a number of satellites greater than three.
- the planet carrier 53 is coupled in rotation with the blower shaft 21.
- the sun gear forms the inlet of the speed reducer while the planet carrier forms the outlet of the speed reducer.
- the fan shaft, the planetary shaft and the power shaft rotate around the longitudinal axis and are coaxial.
- the planet carrier 53 and the shaft of blower 21 are monobloc. In other words, the latter are formed in one piece or coming from material.
- the planet carrier 53 advantageously includes, but is not limited to, a disc 91 defined in a radial plane (perpendicular to the longitudinal axis X).
- the planet carrier 53 includes satellite shafts 92 which project from the disc 91 along the longitudinal axis.
- Each satellite 52 is mounted on a satellite shaft 92 which is mounted in an opening 99 formed in the disc.
- the planet carrier 53 also includes projecting spans 93 along the longitudinal axis. These projecting spans 93 extend circumferentially between the satellite shafts 92.
- the projecting spans 93 form between them and circumferentially cavities allowing each to receive the satellites.
- the openings 99 are located in the bottom of the cavities formed by a part of the wall of the disc 91.
- the projecting surfaces 93 extend radially between the periphery 94 of the disc and a central hole 95 centered on the longitudinal axis to house the sun gear 51. This keeps the satellites in place and prevents misalignments.
- the speed reducer 50 further comprises a cover 56 which is positioned on the downstream side thereof.
- the cover 56 is fixed to the planet carrier 53 so as to maintain the axes of the satellites.
- the cover 56 is thus made integral in rotation with the planet carrier and the fan shaft.
- the cover 56 comprises a wall 96 in the form of a disc and a shaft 56a extending axially from the wall, and in particular from its center. The wall of the cover abuts against radial surfaces of the projecting surfaces 93 of the planet carrier 53.
- the crown 54 surrounds the planet carrier 53 and is centered on the longitudinal axis. Similarly, the latter is fixed relative to the planet carrier 53.
- the ring gear 54 is fixed to a fixed structure of the turbomachine via a support ring 57.
- the fixed structure is rigidly fixed to the internal casing 18 of the turbomachine.
- the speed reducer 50 is located downstream of the separation nozzle 17 of the inter-vein casing.
- the fan shaft 21 is connected to the fan rotor by means of an annular journal 59.
- the latter extends at least over a part of the lubrication enclosure 60 which is arranged upstream of the speed reducer 50.
- the journal 59 has, with the fan shaft 21, a cross section axial in general shape of pin head. Such a shape makes it possible to reduce the radial size since the support ring 25 of the blades can be placed as close as possible to the fan shaft 21.
- the pin 59 extends radially below the feet fan blades. The pin 59 is fixed upstream of the fan shaft 21 and downstream of the support ring 25 carrying the fan blades.
- the pin 59 comprises an annular skirt 61 with a longitudinal axis.
- This skirt 61 is mounted on the fan shaft towards the upstream end 40 thereof, the skirt 61 surrounding the fan shaft.
- the skirt 61 is held on the fan shaft 18 by means of a first holding member 62 mounted upstream of the skirt 61.
- This first holding member 62 may be a nut.
- the trunnion is an insert and attached to the fan shaft.
- the pin 59 comprises a central portion 63 which has an axial section of frustoconical shape.
- the central portion 63 comprises an upstream end 64 which is connected to a first end of the skirt 61. The latter extends inside the central portion 63.
- the central portion 63 further comprises a downstream end 65 which is connected to an annular collar 66 which extends along the radial axis.
- the flange 66 allows the fixing of the journal 59 on the fan rotor. More precisely still, the flange 66 is fixed on a downstream side of the support ring 25 of the fan blades.
- the central portion 63 partially covers the lubrication enclosure 60.
- the upstream end 64 of the journal 59 (in particular of the central portion) is located axially at the level of the setting axis A of the fan blades. Trunnion 59 extends itself downstream of the setting axis A of the fan blades. More specifically, we can see in Figure 2 that the central portion 63 and the flange 66 are located downstream of the setting axis of the fan blades. We understand that the control means 34 is located axially upstream of the journal.
- the lubrication chamber 60 makes it possible to lubricate at least a first guide bearing 69 in rotation of the fan shaft 21.
- the first bearing 69 is arranged upstream of the speed reducer 50.
- the first bearing 69 is a rolling bearing . This includes an annular inner ring and an opposite annular outer ring. Rolling elements are arranged between the inner and outer rings which define raceways.
- the inner ring is carried by the fan shaft 21.
- the outer ring the latter is carried by an upstream bearing support 70.
- the upstream bearing support 70 is rigidly fixed to the fixed structure 49 which is itself fixed to the internal casing 18.
- the first bearing 69 is a double bearing.
- the rolling elements of one of the first upstream and downstream bearings are balls and the rolling elements of the other of the first upstream and downstream bearings are rollers.
- the roller bearing is arranged upstream of the ball bearing.
- the first upstream and downstream bearings 69a, 69b comprise two ball bearings. These bearings make it possible to support axial and radial loads.
- the inner rings of the first upstream and downstream bearings are mounted side by side.
- the inner ring of the first downstream bearing 69b is locked axially downstream by a shoulder (not shown).
- the inner ring of the first upstream bearing is locked axially upstream by a holding member such as a nut.
- the outer ring of the first downstream bearing is locked axially upstream by a shoulder and downstream by a holding member (a nut) on the upstream bearing support 70.
- the inner ring of the first upstream bearing is locked axially upstream by an element axial stop such as a ring (not shown) and downstream by a shoulder.
- the outside diameter of the first downstream bearing 69b is greater than the outside diameter of the first upstream bearing 69a.
- first bearing 69 located upstream of the speed reducer 50.
- the rolling elements of this guide bearing are balls.
- the inner ring 67a of the first bearing 69 is locked axially, on the one hand by an axial holding member 68 upstream, and on the other hand by a shoulder 70 arranged downstream thereof.
- the axial retaining member 68 is here a nut.
- the outer ring 67b is locked axially upstream by a shoulder and downstream by a holding member 77 such as a nut
- the fan shaft 21 is also guided in rotation by means of a second guide bearing 71 (illustrated in FIGS. 2 and 3) located downstream of the speed reducer 50.
- the second guide bearing is also housed in the lubrication enclosure 60.
- the arrangement of a first bearing 69 and a second bearing 71 respectively upstream and downstream of the speed reducer 50 allows a gain in terms of axial size so as to facilitate the integration of the control means 34.
- the maintenance of the speed reducer is also improved with these bearings distributed in upstream and downstream and the relative displacements of its various organs are limited.
- This second guide bearing 71 is a rolling bearing.
- the second guide bearing includes a radially opposed inner ring and an outer ring. The latter define rolling tracks for rolling elements arranged between them.
- the internal ring is carried by the cover 56. More specifically, the internal ring is housed in a radially external surface of the shaft 56a of the cover 56 as can be seen in FIG. 3.
- An axial locking of the internal ring is carried out by upstream by a shoulder 72 and downstream by an axial holding member 73 such as a nut.
- As for the outer ring this is carried by a downstream bearing support 74 which is rigidly fixed to a fixed structure of the turbomachine.
- the outer ring is locked axially upstream by an axial stop element 75 such as a ring and downstream by a shoulder 76 (cf. FIG. 3).
- the rolling elements of this second guide bearing are advantageously cylindrical rollers. The latter advantageously make it possible to support radial loads.
- the lubrication enclosure 60 makes it possible to lubricate the first and second guide bearings 69, 71 of the fan shaft 21 as well as the speed reducer 50.
- the lubricant is oil which occupies the lubrication enclosure in the form of fog.
- the lubrication chamber is delimited upstream by the upstream bearing support 70 and the blower shaft 21.
- Sealing means 78 are provided between the blower shaft 18 and the upstream bearing support 70 so as to avoid lubricant leaks outside the lubrication enclosure.
- the sealing means 78 also make it possible to delimit the lubrication enclosure 60.
- the sealing means 78 form the upstream end of the lubrication enclosure 60.
- the upstream bearing support 70 can be completed by pressurization means (not shown) making it possible to deliver a flow of compressed air inside the lubrication enclosure 60 via the sealing means 78.
- pressurization means may include a channel formed in a cover 84 of the upstream bearing support 70 which is extended thereof upstream.
- the pressurization air is taken from one of the compressors of the turbomachine. This arrangement makes it possible to limit the leakage of lubricant.
- the sealing means 78 are located upstream of the first guide bearing 69.
- the cover 84 of the upstream bearing support supports and partially covers this sealing means 78.
- the journal surrounds the sealing means 78 radially outside.
- the lubrication enclosure 60 Downstream, the lubrication enclosure 60 is delimited by an annular casing 79 fixed to the internal casing and by a portion of the power shaft. A portion 18a of the internal casing 18 also delimits the lubrication enclosure 60. The portion 18a of the internal casing extends axially between the upstream bearing support 70 and the annular casing 79. The latter is located downstream of the downstream bearing support 74.
- a deflector 80 (visible in FIG. 3) is mounted in the lubrication enclosure 60 to guide the lubricant (here the oil) from one member to another.
- This deflector 80 in the context of FIG. 3 is arranged axially between a nut 97 of the deflector 80 upstream (mounted on the fan shaft 21) and a shoulder 98 of the fan shaft.
- the deflector 80 is mounted axially between the deflector nut and the internal ring of the first guide bearing 69.
- the fluid supply means 45 of the control means are configured so as to be connected to the fluid supply source 83 and to supply the chambers 44a, 44b of the control means.
- the supply means comprise at least one pipe which passes through the speed reducer 50.
- several pipes 81 (here three) make it possible to supply the control means 34.
- These pipes 81 are advantageously high pressure pipes.
- the pressure circulating in each pipe is of the order of 120 bars.
- the high pressure fluid which circulates in the pipes 81 is advantageously an oil.
- an oil transfer bearing 82 which is known under the acronym in English "OTB" for Oil transfer Bearing is arranged downstream of the speed reducer 50.
- the oil transfer bearing 82 allows, as its name suggests, to transfer a fluid (oil) from the power source 83 which is placed downstream of the speed reducer 50, in a fixed reference point of the turbomachine, upstream of the speed reducer to supply the speed reducer but also the actuator which is placed in a rotating marker. Likewise, placing the oil transfer bearing 82 downstream of the speed reducer 50 makes it possible to reduce its diameter, to reduce the risks of leakage of the latter and to limit the thermal power of the latter.
- the oil transfer bearing 82 which is shown diagrammatically in FIGS. 2 and 3 comprises a radially internal annular part (not shown) which is mounted in rotation with the planet carrier 53 (on the downstream side). This first part is in particular fixed on the cover shaft.
- the oil transfer bearing also includes a radially external annular part which is secured to the fixed structure of the turbomachine.
- the lubrication fluid circulates between the radially inner and outer parts.
- the oil transfer bearing is coupled upstream to the pipes 81 (here three) which will be routed in the speed reducer 50 to the control means 34.
- Such a configuration makes it possible, on the one hand, to reduce the radial dimensions of the blower module and to gain in compactness (therefore in mass), and on the other hand to reduce the overhang of the center of gravity of the blower module relative to the bearings which support it to improve the dynamic behavior of the fan rotor.
- the speed reducer 50 comprises through openings 100 which are crossed by the pipes 81.
- the through openings 100 are formed at the projecting surfaces 93 of the planet carrier 53 and are hollowed out inside these.
- the through openings 100 extend on either side axially projecting surfaces 93 to open on an upstream side of the disc 91 of the speed reducer.
- the fan shaft 21 comprises radial orifices 101 which are intended to be traversed each by a pipe 81.
- each through opening 100 of the projecting surfaces 93 open into the interior of the fan shaft.
- each through opening 100 has an inclined direction so that it opens into the interior of the fan shaft.
- Each projecting surface 93 includes a single through opening.
- each through opening is arranged between two adjacent satellites.
- the cover 56 of the planet carrier 53 includes through holes 102 which pass through the wall 96 of the disc on either side.
- the through holes 102 and the through openings 100 are aligned.
- the openings through 100 and the through holes 102 are elongated in a circumferential direction.
- the radial section of the through holes and through openings can be oblong or rectangular.
- the openings and through orifices may have a radial section of circular shape as soon as these allow the passage of the pipes 81.
- each pipe 81 extends at least in part inside the fan shaft 21.
- the pipes 81 each comprise, from downstream to upstream, a first portion 81 a which extends axially upstream of the speed reducer, a second portion 81 b which extends radially upstream of the speed reducer (in particular of the cover 56), a third portion 81c which extends substantially axially inside the speed reducer (in the through openings of the planet carrier and through orifices of the cover), a fourth portion 81 d which extends substantially radially upstream of the speed reducer and a fifth portion 81 e which extends axially inside the fan shaft.
- Each pipe 81 is also connected to the chambers 44a, 44b of the actuator via an orifice 85 (cf. FIG. 3) which opens into them.
- FIG. 4 represents another type of turbomachine to which the invention applies.
- This turbomachine comprises a fan module 3 with an upstream fan 400a and a downstream fan 400b.
- the upstream blower 400a is arranged substantially identically to that described above. That is to say that the upstream blower 400a is movable in rotation using a blower rotor and comprises blades with variable setting.
- the pitch change system 32 is installed in the blower rotor with the control means 34 upstream of the blower shaft 21.
- the pin 59 is fixed on the one hand, downstream of the support ring 25 and on the other hand, upstream of the fan shaft.
- the control means is located axially upstream of the journal.
- the difference which exists with the fan of the other turbomachine is that the upstream fan 400a is not faired.
- the downstream blower 400b is fixed to a fixed casing (which may be the inter-vein casing 16).
- the downstream blower 400b comprises blades 401 which are of variable setting.
- a pitch change system (not shown) is provided to change the timing of these blades. These extend radially through the secondary vein 15 arranged around the gas generator.
- the blades 401 are arranged axially downstream of the movable blades.
- the blades of the downstream blower 400b are not faired either.
- the blades of the fixed downstream fan have a length substantially along the radial axis which is less than that of the upstream movable fan.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1859405A FR3087233B1 (fr) | 2018-10-10 | 2018-10-10 | Module de soufflante a pales a calage variable |
| PCT/FR2019/052418 WO2020074839A1 (fr) | 2018-10-10 | 2019-10-10 | Module de soufflante a pales a calage variable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3864297A1 true EP3864297A1 (fr) | 2021-08-18 |
| EP3864297B1 EP3864297B1 (fr) | 2023-05-17 |
Family
ID=65244234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19813617.8A Active EP3864297B1 (fr) | 2018-10-10 | 2019-10-10 | Module de soufflante a pales a calage variable |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11466697B2 (fr) |
| EP (1) | EP3864297B1 (fr) |
| CN (1) | CN112888859B (fr) |
| CA (1) | CA3116046A1 (fr) |
| FR (1) | FR3087233B1 (fr) |
| WO (1) | WO2020074839A1 (fr) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022228734A2 (fr) * | 2021-04-26 | 2022-11-03 | Malte Schwarze | Génération efficace de poussée |
| FR3127532B1 (fr) | 2021-09-29 | 2023-10-13 | Safran Aircraft Engines | Module pour une turbomachine d’aeronef |
| FR3130894B1 (fr) | 2021-12-20 | 2024-09-06 | Safran Aircraft Engines | Module de turbomachine equipe d’aubes a calage variable et d’une virole annulaire d’interface |
| FR3130895B1 (fr) | 2021-12-20 | 2023-11-03 | Safran Aircraft Engines | Module de turbomachine equipe d’un systeme de changement de pas et d’un dispostif de transfert de fluide |
| FR3130875B1 (fr) | 2021-12-20 | 2024-08-09 | Safran Aircraft Engines | Module de turbomachine equipe d’aubes a calage variable et d’un dispostif de transfert d’huile |
| FR3130874B1 (fr) | 2021-12-20 | 2023-11-10 | Safran Aircraft Engines | Module de turbomachine equipe d’un systeme de changement de pas et d’un dispostif de transfert de fluide a emmanchement en aveugle |
| TR2022018726A1 (tr) * | 2022-12-07 | 2024-06-21 | Tusas Tuerk Havacilik Ve Uzay Sanayii Anonim Sirketi | Bir hava aracı. |
| FR3144186A1 (fr) * | 2022-12-21 | 2024-06-28 | Safran Aircraft Engines | Système propulsif aéronautique |
| FR3154761B1 (fr) | 2023-10-26 | 2025-09-26 | Safran Aircraft Engines | Module de turbomachine equipe d’un systeme de changement de pas et d’un dispositif de transfert de fluide |
| FR3155207B1 (fr) | 2023-11-14 | 2025-10-17 | Safran Aircraft Engines | Actionneur hydraulique lineaire pour une turbomachine d’aeronef |
| CN118532340B (zh) * | 2024-07-19 | 2024-11-12 | 山东百易智能装备股份有限公司 | 一种环卫车的自适应变量风机系统及环卫车 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2850103A (en) * | 1956-05-14 | 1958-09-02 | United Aircraft Corp | Propeller mounted on engine casing |
| GB2180892B (en) * | 1985-09-28 | 1990-03-07 | Dowty Rotol Ltd | A control system for a bladed rotor assembly |
| US7493753B2 (en) * | 2005-10-19 | 2009-02-24 | General Electric Company | Gas turbine engine assembly and methods of assembling same |
| FR2942615B1 (fr) * | 2009-02-27 | 2011-04-01 | Snecma | Dispositif a helices contrarotatives ayant un moyen de changement de pas des helices |
| GB0904913D0 (en) * | 2009-03-24 | 2009-05-06 | Rolls Royce Plc | A mechanical arrangement |
| US10145259B2 (en) * | 2013-05-08 | 2018-12-04 | United Technologies Corporation | Fan drive gear system with improved misalignment capability |
| FR3022890B1 (fr) * | 2014-06-25 | 2018-01-05 | Snecma | Turbomachine comportant un moyen de decouplage d'une soufflante |
| WO2016166487A1 (fr) * | 2015-04-17 | 2016-10-20 | Safran Aircraft Engines | Turbomoteur a doublet d'helices contrarotatives dispose en amont du generateur de gaz |
| US10119465B2 (en) * | 2015-06-23 | 2018-11-06 | United Technologies Corporation | Geared turbofan with independent flexible ring gears and oil collectors |
| US20170167507A1 (en) * | 2015-12-09 | 2017-06-15 | General Electric Company | Method and system for a pitch change mechanism hydraulic fluid transfer sleeve |
| FR3046410B1 (fr) * | 2016-01-05 | 2017-12-29 | Snecma | Assemblage pour turbomachine d'aeronef a helices contrarotatives non carenees, comprenant un fourreau de passage de servitudes a encombrement reduit |
| FR3046402B1 (fr) * | 2016-01-05 | 2020-02-28 | Safran Aircraft Engines | Systeme de changement de pas pour turbopropulseur a doublet d'helices contrarotatives amont |
| US10393137B2 (en) * | 2016-02-12 | 2019-08-27 | General Electric Company | Method and system for integrated pitch control mechanism actuator hydraulic fluid transfer |
-
2018
- 2018-10-10 FR FR1859405A patent/FR3087233B1/fr not_active Expired - Fee Related
-
2019
- 2019-10-10 CA CA3116046A patent/CA3116046A1/fr active Pending
- 2019-10-10 EP EP19813617.8A patent/EP3864297B1/fr active Active
- 2019-10-10 WO PCT/FR2019/052418 patent/WO2020074839A1/fr not_active Ceased
- 2019-10-10 US US17/283,496 patent/US11466697B2/en active Active
- 2019-10-10 CN CN201980069339.8A patent/CN112888859B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20210396244A1 (en) | 2021-12-23 |
| CA3116046A1 (fr) | 2020-06-14 |
| WO2020074839A1 (fr) | 2020-04-16 |
| FR3087233A1 (fr) | 2020-04-17 |
| CN112888859A (zh) | 2021-06-01 |
| US11466697B2 (en) | 2022-10-11 |
| EP3864297B1 (fr) | 2023-05-17 |
| CN112888859B (zh) | 2024-04-12 |
| FR3087233B1 (fr) | 2021-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3864297B1 (fr) | Module de soufflante a pales a calage variable | |
| EP4453399A1 (fr) | Module de turbomachine equipe d'aubes a calage variable et d'une virole annulaire d'interface | |
| EP4452751A1 (fr) | Module de turbomachine equipe d'aubes a calage variable et d'un dispostif de transfert d'huile | |
| FR3066559B1 (fr) | Module de soufflante a pales a calage variable | |
| WO2021165616A1 (fr) | Module de turbomachine equipe de systeme de changement de pas des pales d aubes de stator | |
| EP2867551B1 (fr) | Palier a moyen de lubrification et systeme pour changer le pas des pales d'une helice de turbopropulseur d'aeronef, equipe dudit palier | |
| CA2869275C (fr) | Systeme de transmission de puissance pour une turbomachine | |
| FR3066558B1 (fr) | Module de soufflante a pales a calage variable | |
| CA2758175A1 (fr) | Moteur a turbine a gaz a double corps pourvu d ' un palier inter-arbres | |
| FR2987416A1 (fr) | Dispositif de lubrification d'un reducteur epicycloidal. | |
| EP3647546B1 (fr) | Module de soufflante a pales a calage variable | |
| EP4222355A1 (fr) | Module de turbomachine equipe d'une helice et d'aubes de stator deportees | |
| FR3114611A1 (fr) | Module de turbomachine equipe d’une helice et d’aubes de stator portees par deux carters et turbomachine correspondante | |
| FR3046402A1 (fr) | Systeme de changement de pas pour turbopropulseur a doublet d'helices contrarotatives amont | |
| FR3021296A1 (fr) | Ensemble de propulsion a doublet d'helices pour aeronef | |
| EP4479632B1 (fr) | Turbomachine pour un aeronef | |
| EP3963190B1 (fr) | Architecture améliorée de turbomachine à turbine contrarotative | |
| FR3098850A1 (fr) | Module de turbomachine equipe de systeme de changement de pas des pales d’une helice et d’un dispositif de mise en drapeau des pales. | |
| FR3118093A1 (fr) | Aube de turbine, en particulier destinée à une turbine contrarotative | |
| EP4448382B1 (fr) | Ensemble hydraulique pour un moteur d'aeronef | |
| FR3150840A1 (fr) | Reducteur comportant un palier de guidage du solaire | |
| FR3155207A1 (fr) | Actionneur hydraulique lineaire pour une turbomachine d’aeronef | |
| FR3137131A1 (fr) | Module de turbomachine équipé d’un raccord fluidique | |
| FR3126017A1 (fr) | Module de soufflante a pales a calage variable | |
| FR3111377A1 (fr) | Architecture améliorée de turbomachine à turbine contrarotative |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20210430 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20230201 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602019029120 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1568470 Country of ref document: AT Kind code of ref document: T Effective date: 20230615 |
|
| REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20230517 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1568470 Country of ref document: AT Kind code of ref document: T Effective date: 20230517 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230918 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230817 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230917 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230818 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602019029120 Country of ref document: DE |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20240220 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20231031 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231031 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231031 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231031 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20191010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20191010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230517 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20251020 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20251029 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20251022 Year of fee payment: 7 |